package com.hx.collection;

import java.util.Map;
import java.util.TreeMap;

/**
 * @author jxlgcmh
 * @create 2019-05-07 20:03
 */
public class MapTree {
    public static void main(String[] args) {
        Map map = new TreeMap();
        map.put("A", 1);
        map.put("B", 1);
        map.put("C", 1);
        System.out.println(map);
    }
}
